In a Phase II trial (MACBETH), first-line treatment with the combination of Erbitux (cetuximab) and FOLFIRI, followed by Avastin (bevacizumab) maintenance, demonstrated activity in BRAF/KRAS/NRAS wild-type metastatic colorectal cancer patients, resulting in a median overall survival in the intent-to-treat population of 32.2 mo and response rate of 75% (43/57), however, resulted in a 10-mo PFS rate of 40.4% (23/57), which did not meet the primary endpoint of 70% (PMID: 29450468; NCT02295930).

In a Phase II trial (MACBETH), first-line treatment with the combination of Erbitux (cetuximab) and FOLFIRI, followed by Erbitux (cetuximab) maintenance, demonstrated activity in BRAF/KRAS/NRAS wild-type metastatic colorectal cancer patients, resulting in a median overall survival in the intent-to-treat population of 33.2 mo and response rate of 68% (40/59), however, resulted in a 10-mo PFS rate of 50.8% (30/59), which did not meet the primary endpoint of 70% (PMID: 29450468; NCT02295930).

In a Phase I trial, treatment with RAF265 in melanoma patients resulted in an objective response rate of 12.1% (8/66), including a partial response in four patients harboring BRAF V600E, two partial responses and one complete response in patients with wild-type BRAF, and one complete response in a patient with unknown mutational status (PMID: 28719152).

In a preclinical study, a BRAF wild-type melanoma cell line demonstrated minimal sensitivity when treated with the combination of Ibrance (palbociclib) and Mekinist (trametinib) in culture (PMID: 27488531).

In a preclinical study, the combination of Binimetinib (MEK162) and Buparlisib (BKM120) resulted in improved cell growth inhibition compared to either agent alone in a metastatic melanoma cell line with wild-type BRAF and wild-type NRAS in culture (PMID: 27307593).